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#16
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I did try the Bowden adjustment but it had no effect on the downshift. It moved the shift point up to higher rpm's, but didn't seem to affect the downshift one bit. Looking at how the Bowden cable is rigged, in my car anyway, the Bowden cable only works when there is throttle pressure. Most of the time as I decelerate, my foot is off the pedal anyway. Maybe the earlier deisels were set up differently. Thanks for the suggestion though.
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1972 280SE 4.5 1984 300SD, 250K 1991 300SE, 89K 1992 300D (330K miles when KIA'd by mother-in-law 8/10/09 - still sitting in my barn) 1994 E320, 109K 1995 E420, 60K Proud Member of the Mercedes Benz Club of America - Idaho Chapter |
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92 300D 2.5L OM602 OBK #59 |
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I am thinking of taking it to a transmission shop with experience in odd-bad transmissions to see if they can diagnose it. Still thinking the first sjop messed something up with the internal modulation pressure when they had the valve body off and replaced the seals. That was $600 I wish I had never spent...I'd rather still have the 2-3 flare then this slamming downshift I have now.
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1972 280SE 4.5 1984 300SD, 250K 1991 300SE, 89K 1992 300D (330K miles when KIA'd by mother-in-law 8/10/09 - still sitting in my barn) 1994 E320, 109K 1995 E420, 60K Proud Member of the Mercedes Benz Club of America - Idaho Chapter |
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Sorry to read that you've got $600+ into it and it's not right. Keep us updated. I've got 319K on my 92 so I've got an interest in what's happening to others.
Have you seen this: http://pdfcast.org/pdf/mercedes-benz-technical-service-information-722-3-4-erratic-downshift Some other reading might be of help: http://www.scribd.com/doc/33042562/1996-Mercedes-Benz-C220DIAGNOSIS-722-SERIES-%E0%B8%8A%E0%B9%88%E0%B8%B2%E0%B8%87%E0%B8%81%E0%B8%9A
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92 300D 2.5L OM602 OBK #59 Last edited by bobodaclown; 09-25-2010 at 02:07 PM. |
#20
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I'll let you know when I get it resolved. It'll be awhile since I'm on my way to spend a year in Iraq courtesy of the US Army. But when I'm back, I'll dive back into this problem. It's driving me nuts, but otherwise I love the car and would like to see this tranny problem resolved, especially since it's my around-the-town daily driver. Thanks!
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1972 280SE 4.5 1984 300SD, 250K 1991 300SE, 89K 1992 300D (330K miles when KIA'd by mother-in-law 8/10/09 - still sitting in my barn) 1994 E320, 109K 1995 E420, 60K Proud Member of the Mercedes Benz Club of America - Idaho Chapter |
#21
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What Would Rudolph Do? 1975 300D, 1975 240D, 1985 300SD, 1997 300D, 2005 E320 , 2006 Toyota Prius |
#22
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1972 280SE 4.5 1984 300SD, 250K 1991 300SE, 89K 1992 300D (330K miles when KIA'd by mother-in-law 8/10/09 - still sitting in my barn) 1994 E320, 109K 1995 E420, 60K Proud Member of the Mercedes Benz Club of America - Idaho Chapter |
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Thanks. Wayfarer. Yep. I was looking at right thing. Guess they got rid of adjusting nut. I like my shift points. Need to adjust the VCV. Not getting vacuum from it at all. Where did you get info on adjusting the VCV.? I can't find it in the fsm.
L
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What Would Rudolph Do? 1975 300D, 1975 240D, 1985 300SD, 1997 300D, 2005 E320 , 2006 Toyota Prius |
#24
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If you're not getting any vacuum at all out of it though, there might be something else going on. Check all the lines for leaks first.
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1972 280SE 4.5 1984 300SD, 250K 1991 300SE, 89K 1992 300D (330K miles when KIA'd by mother-in-law 8/10/09 - still sitting in my barn) 1994 E320, 109K 1995 E420, 60K Proud Member of the Mercedes Benz Club of America - Idaho Chapter |
#25
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Bite the bullet
If the mechanics said the problem is in your transmission, then maybe the problem is with your transmission.
Have them fix it, and be done. Good luck. |
#26
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That thing shifts so smooth now can't even feel it. Amazing. Also turbo kicks in better. Runs like a new car. 265,000 on this one. Awesome w124s. Now my wagon, I think it might have bigger problems.
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What Would Rudolph Do? 1975 300D, 1975 240D, 1985 300SD, 1997 300D, 2005 E320 , 2006 Toyota Prius |
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